class_docstr: We abuse the code generator for introspection.
code: def __init__(self, environment: "Environment") -> None:
      super().__init__(
          environment, "<introspection>", "<introspection>"
      )
      self.undeclared_identifiers: t.Set[str] = set()
  
file_path: catboost/contrib/python/Jinja2/py3/jinja2/meta.py
imports: import typing
  from .None import nodes
  from .compiler import CodeGenerator
  from .compiler import Frame
label_desc: Use image node_id 1 to create a new TrackingCodeGenerator object from inherited base classes: CodeGenerator with example: obj = TrackingCodeGenerator(environment)